Updated descriptions to what they are supposed to be

src/Problems/Problem15.rs

@@ -30,7 +30,7 @@ static WIDTH: i32 = 20;
 static LENGTH: i32 = 20;
 
 pub fn getDescription() -> String{
-	"Which starting number, under one million, produces the longest chain using the itterative sequence?".to_string()
+	"How many routes from the top left corner to the bottom right corner are there through a 20x20 grid if you can only move right and down?".to_string()
 }
 
 pub fn solve() -> Answer{

src/Problems/Problem16.rs

@@ -26,7 +26,7 @@ extern crate myClasses;
 use crate::Problems::Answer::Answer;
 
 pub fn getDescription() -> String{
-	"Which starting number, under one million, produces the longest chain using the itterative sequence?".to_string()
+	"What is the sum of the digits of the number 2^1000?".to_string()
 }
 
 pub fn solve() -> Answer{